Take in account the LM7805 is a series linear regulator, so you don't
care about the power, but the current your power supply can output.
Also be sure that your heatsink is properly attached, or it'll go into
thermal-shutdown. BTW, you won't be able to plug a Wi-Fi, and maybe
even a flash drive with these power supplies.
Good luck,
Gonzalo
--- In "HOSAM YOUSIF" <> wrote:
>
> hi all
> thanks for your reply
> but i want to tell u wht happen:
> i have hp printer
> i take it's power supply& it's specs is:
> output1:32V,563mA
> output2:15v,533ma
> max. o/p power=20w
> i take output2 and enter it to lm7805 regulator and put the o/p
> voltage to ts-7250
> when i used another power supply with the same specs put it have max.
> o/p power=18w the ts-7250 not boot it happen what hishamelgaurf(he is
> my friend and we have ts-7250 together) is semd in here message:
> http://tech.groups.yahoo.com/group/ts-7000/message/5376
> plz any one explaine this
> -i want to know if this different in max. power is the reason for what
> happen
> -plz any one send to me the best specification of the power supply we
> can use it in our ts-7250
> thanks alot
>
> --- In Per �berg <oberg@> wrote:
> >
> > Hi
> >
> > > 1. the type of serial cable between my pc and ts-7250 is
> crossover or
> > > straight.
> >
> > Crossover
> >
> > > 2. the type of ethernet cable between my pc and ts-7250 is
crossover
> > > or straight.
> >
> > Crossover
> >
> > > 3. i have power supply it's output is 5v and 2A this power
> sufficient
> > > or my board will in danger.
> >
> > I have 2A and I have no problems. I will not promise anything but i
> > doubt that having to weak PS will damage your TS-board. If
anything, it
> > might damage your supply.
> >
> > //Per �berg
> >
> >
> > --
> > Per �berg, Ph.D. Student
> > Address: Division of Vehicular Systems
> > Department of Electrical Engineering
> > Link�pings universitet
> > 581 83 Link�ping, SWEDEN
> > Phone: +46 (0)13-28 23 69
> > e-mail: oberg@
> >
>
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